Table 3 Thyroid function test results in stratified time intervals after the pregnancy among patients diagnosed with postpartum thyroiditis (O905) in the North Denmark Region from 2016 to 2019. Results are illustrated for all patients with available biochemical test results (upper part) and for patients who did not receive treatment with Levothyroxine at the time of biochemical assessment (lower part).

From: Diagnoses of obstetric and postpartum thyroid disease: a Danish validation study

 

Ref

 < 3 months

3–6 months

6–9 months

9–12 months

12–24 months

n

median

95% CI

n

median

95% CI

n

median

95% CI

n

median

95% CI

n

median

95% CI

All

 TSH (mIU/L)

0.3–4.5

8

0.005

0.005–1.9

27

6.0

4.4–12.4

35

3.2

2.0–4.6

28

2.3

1.6–3.1

35

1.5

1.1–2.1

 Total T3 (nmol/L)

1.1–2.5

6

3.1

1.7–5.0

23

1.6

1.4–1.7

30

1.5

1.4–1.7

23

1.6

1.4–1.8

27

1.6

1.5–1.6

 Total T4 (nmol/L)

60–140

6

186

98–226

25

69

57–83

31

80

76–84

22

89

83–97

26

94

95–104

No treatment

 TSH (mIU/L)

0.3–4.5

8

0.005

0.005–1.9

27

8.2

3.2–23.1

24

4.4

2.2–18.5

11

3.0

1.5–4.9

15

1.6

1.1–2.8

 Total T3 (nmol/L)

1.1–2.5

6

3.1

1.7–5.0

22

1.7

1.3–1.8

16

1.6

1.4–2.1

7

1.6

1.2–2.3

9

1.6

1.2–1.8

 Total T4 (nmol/L)

60–140

6

186

98–226

25

57

44–83

20

65

54–80

7

83

57–96

8

93

73–108

  1. Ref. Reference interval in the local laboratory, CI confidence interval, TSH Thyrotropin, T3 Triiodothyronine, T4 Thyroxine.